CN103097219A - Power generation control device for electric vehicle - Google Patents
Power generation control device for electric vehicle Download PDFInfo
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- CN103097219A CN103097219A CN201180043955XA CN201180043955A CN103097219A CN 103097219 A CN103097219 A CN 103097219A CN 201180043955X A CN201180043955X A CN 201180043955XA CN 201180043955 A CN201180043955 A CN 201180043955A CN 103097219 A CN103097219 A CN 103097219A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/46—Series type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/13—Maintaining the SoC within a determined range
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/086—Power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/24—Energy storage means
- B60W2710/242—Energy storage means for electrical energy
- B60W2710/244—Charge state
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/93—Conjoint control of different elements
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
A power generation control device (11) of the present invention for an electric vehicle is provided with an electrical power generator (4) driven by an internal combustion engine, a drive battery (5) which is capable of charging up power that has been generated by the electrical power generator (4) and which can detect the SOC which is the state of charge, and a drive motor (6) which is capable of propelling the vehicle using power generated by the electrical power generator (4) or power that has charged up in the drive battery (5), wherein the power generation control device (11) is characterized in controlling the generated torque of the electrical power generator (4) so as to correspond to the output, which is the sum of the drive-required torque which has been calculated separately from the drive torque of the drive motor (6) on the basis of human operation, and the battery-required output calculated on the basis of the SOC.
Description
Technical field
The present invention relates to the power generation control of elec. vehicle, relate in particular to the driving torque of considering elec. vehicle and to driving the charge volume of battery, to by the power generation control that is arranged on petrol-electric generating set in the serial mixed power elec. vehicle and carries out the elec. vehicle of Generation Control.
Background technology
The serial mixed power elec. vehicle comprises by petrol-electric generating set, can store the electric power that is produced by this electrical generator and survey driving battery as the SOC of charge condition, and can come the driving motor of propelled vehicles with the electric power that is produced by this electrical generator or the electric power that is stored in this driving battery, and control the operation of this combustion engine and the charge/discharge of this driving battery by power generation control.
Example by the Generation Control of petrol-electric generating set is comprised: according to the electric power of the judgement of battery status being determined produce and according to maximum regeneration electric power and the maximum control (TOHKEMY 1999-136808 communique) that produces electric power judgement battery status; Carry out/stop the control of generating electricity according to the SOC as battery charging state, wherein generating dutation changes (No. 3200493 communiques of Japanese Patent) according to car speed; And according to motoring condition target setting SOC and make SOC converge to the control (TOHKEMY 1998-150701 communique) of this target SOC.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 1999-136808 communique
Patent documentation 2: No. 3200493 communiques of Japanese Patent
Patent documentation 3: TOHKEMY 1998-150701 communique
Summary of the invention
The problem that invention will solve
In addition, the type of the power generation control of elec. vehicle comprises: in the maximum generation efficient operating point type (hereinafter referred to as " attachment point operation ") of operate generator SOC is remained on fixed range intermittently; And control driving motor and other electric load, make the power consumption type consistent with the electric power that produces of driving motor and other electric load.
Yet, be as the former shortcoming of attachment point action type, because combustion engine is irrelevant with driver's intention such as accelerator operation with fixing revolution operation all the time, so the driver has the difference sense.The shortcoming of controlling the latter of type as electric load is, because power consumption is determined by the electric power that produces, so when simply according to the output of electric power overbalance restriction driving motor, rideability is subject to the generating capacity restriction.
The objective of the invention is generating and don't the sense of generation difference when guaranteeing rideability.
For the scheme of dealing with problems
The present invention is a kind of power generation control of elec. vehicle, comprising: electrical generator, and it is by internal combustion engine drive; Drive battery, it can be stored the electric power that is produced by described electrical generator and survey SOC as charge condition; And driving motor, it can use the electric power that is produced by described electrical generator or be stored in electric propulsion vehicle in described driving battery, wherein, described power generation control is controlled the power generation torque of described electrical generator, with corresponding to the output of exporting sum as driving request output and battery request, wherein, driving request output is to be independent of the driving torque of described driving motor and to calculate based on artificial manipulation, and battery request output calculates according to described SOC.
The invention effect
The power generation control of elec. vehicle of the present invention can be guaranteed in accordance with the propulsive effort of the driving motor of driver's intention and rideability.
The power generation control of elec. vehicle of the present invention can be guaranteed the electric energy generated for the electrical generator that will drive the battery charging.
The power generation control of elec. vehicle of the present invention can remain on the driving battery state near preferred SOC.
Description of drawings
Fig. 1 is the block diagram of Generation Control of the power generation control of elec. vehicle.(embodiment)
Fig. 2 is the system layout of the power generation control of elec. vehicle.(embodiment)
Fig. 3 illustrates the first Map's graph that driving torque calculates.(embodiment)
Fig. 4 illustrates the second Map's graph that the driver asks electric energy generated to calculate.(embodiment)
Fig. 5 is the 3rd Map's graph that generating correction (battery request output) is shown.(embodiment)
Fig. 6 illustrates maximum engine torque curve in internal combustion engine performance mapping and the figure of electrical generator operating curve.(embodiment)
The specific embodiment
The below describes embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 to Fig. 6 illustrates embodiments of the present invention.In Fig. 2, Reference numeral 1 expression serial mixed power elec. vehicle, Reference numeral 2 expression power generation controls.Electrical generator 4, driving battery 5 and driving motor 6 that the power generation control 2 of elec. vehicle 1 is configured to be driven by combustion engine 3 interconnect by high-tension cable (HV+/HV-) 7.In addition, other electric load 8 is connected to high-tension cable 7.Other electric load 8 is the electric loads by high voltage drive, as A/C compressor, air-conditioning heater etc.
The driving torque command driven driving motor 6 that power generation control 2 bases are calculated by driving control unit 11, and drive drive wheels 10 via axle drive shaft 9.On the other hand, power generation control 2 with the combustion engine control command (for example, the throttle opening order) sending to combustion engine 3 from driving control unit 11 will be by the electric power of driving motor 6 and 8 consumption of other electric load to produce, and send the power generation torque order to electrical generator 4 and control electric energy generated, thereby the electric power of power consumption on the whole ,=produce.Yet the instantaneous value of the electric power that produces does not always need consistent with power consumption, is used as power buffer because drive battery 5.
In power generation control 2, as shown in fig. 1, the electric power that driving control unit 11 decisions produce.In driving control unit 11, by driving torque calculating part 14(with reference to the explanation to Fig. 3 of describing after a while) the required driving torque order to driving motor 6 of travelling of calculating elec. vehicle 1 according to accelerator opening and the speed of a motor vehicle.In the case, for the required electric power that travels is provided, ask electric energy generated calculating part 15 to carry out the calculating that the driver asks electric energy generated (with reference to the explanation of Fig. 4 of description after a while) by the driver, consistent with the electric power of driving motor 6 consumption but the driver asks the result of calculation of electric energy generated always not need.Due to the driver ask electric energy generated and the operation of internal combustion engine condition closely related, so if the operation of internal combustion engine condition is from desired different by driver behavior, the driver has difference sense.
Therefore, driving control unit 11 focuses on to prevent that as much as possible the driver from having the difference sense, decides the driver to ask electric energy generated (driving request output) according to the operation of internal combustion engine condition that mainly comprises the accelerator opening that is determined by artificial manipulation.When asking electric energy generated to carry out electric power control according to this driver, drive battery 5 and enter electric current inflow state or outflow of bus current state, and cause overcharging or over-discharge state.Therefore, in driving control unit 11, by the SOC deviation of SOC deviation calculating part 16 calculating as the difference between SOC and SOC expected value, the convergence target that described SOC expected value is SOC, by generating correction calculating part 17(with reference to the explanation to Fig. 5 of describing after a while) calculate generating correction (battery request output) according to this SOC deviation, and ask will generate electricity result of calculation and the above-mentioned driver of correction calculating part 17 of calculating part 18 to ask the electric energy generated addition by generating.
The SOC and the SOC deviation between the SOC expected value that drive battery 5 are fed (tending to pass through generating-charging), thereby SOC drops in certain scope.In Generation Control section 19, according to the generating request of asking electric energy generated and generating correction sum as the driver, carry out Generation Control (with reference to the explanation to Fig. 6 of describing after a while), thereby calculate the combustion engine control command of combustion motor 3 and to the power generation torque order of electrical generator 4.Driving control unit 11 sends to combustion engine 3 with this combustion engine control command, and this power generation torque order is sent to electrical generator 4, thereby controls electric energy generated.
At this, driver's artificial manipulation refers to accelerator operation.Owing to determining accelerator opening according to accelerator operation amount, so can detect accelerator operation amount by detecting accelerator opening by accelerator sensor 12.In addition, the battery request output that calculates according to the SOC that drives battery 5 is the generating correction.The result of asking the electric energy generated addition of electric energy generated to obtain by the driver that will be determined by artificial manipulation (accelerator opening) as battery request output and the basis of generating correction be final actual power generation.
In the case, the driver ask the output of electric energy generated and actual driving motor some the time be considered to approximately equal, but not all consistent with each other in any moment, similarly, drive the amount of charge/discharge of battery 5 and generating correction some the time be considered to approximately equal, but be not all consistent with each other in moment arbitrarily.
Even with revenue and expenditure former state accumulation and accumulate poor between them, also no problem reason is, described difference occurs in the amount of charge/discharge that drives battery 5 and occurs in the SOC deviation, and therefore as the feedback result of SOC deviation, described difference is corrected.Therefore, revenue and expenditure is consistent with each other, thereby on the whole, the electric power of power consumption=produce.Therefore, battery request output can be the generating correction.
Fig. 3 is that driving torque calculating part 14 calculates the first example that shines upon that driving torque is used.As shown in Figure 3, according to accelerator opening and the speed of a motor vehicle and set the driving torque of driving motor 6 with the first mapping.Particularly, the driving torque of driving motor 6 is set as and makes driving torque increase and increase along with accelerator opening, and in the high-speed side of the speed of a motor vehicle, driving torque is along with the speed of a motor vehicle increases and reduces gradually.
In the case, determine the driving torque order according to the speed of a motor vehicle and accelerator opening.What pay close attention to is the following fact: the driving torque order that determine this moment is not limited by the electric energy generated predictor of electric energy generated or electrical generator 4.Responsibility is low even the rising characteristic of electrical generator 4 is owing to being placed in high priority with generating efficiency, also can be independent of this rising characteristic ground setting driving torque characteristic.
Fig. 4 is that the driver asks electric energy generated calculating part 15 to calculate the second example that shines upon that the driver asks electric energy generated to be used.As shown in Figure 4, the driver who only sets based on artificial manipulation according to accelerator opening asks electric energy generated (driving request output).Particularly, the driver asks electric energy generated to be set as to make the driver to ask electric energy generated along with accelerator opening increases and increases, and the driver asks the increment rate of electric energy generated along with accelerator opening increases and descends.
That the driver asks electric energy generated (driving request output) not need is consistent with the power consumption according to the driving motor 6 of the driving torque order in Fig. 3 prediction, but according to being set by the desired operation of internal combustion engine condition of driver behavior by the driver.In general, expect the increase of engine speed by accelerator pedal.In the present embodiment, the driving request electric energy generated is set as with respect to accelerator opening and increases monotonously.
Fig. 5 is that generating correction calculating part 17 calculates the 3rd example that shines upon that the generating correction is used.As shown in Figure 5, according to the SOC that drives battery 5 and the generating of the SOC deviation setting between SOC expected value correction (battery request output).Particularly, the absolute value of generating correction increases and increases along with the SOC deviation, and the increment rate of the absolute value of generating correction increases and reduces gradually along with the SOC deviation.
When being timing as the SOC that drives battery 5 and the SOC deviation of the difference between the SOC expected value, being set as negative value by the correction of generating electricity and suppressing the generating request, thereby reduce SOC., be set as on the occasion of increasing the generating request by the correction of generate electricity when negative when the SOC deviation, thus increase SOC.Thus, control around the SOC expected value SOC that drives battery 5.The generating correction plays the effect of asking the biasing of electric energy generated with respect to above-mentioned driver, therefore the operation of internal combustion engine condition is minimized to the difference sense that the driver brings.
Fig. 6 illustrates internal combustion engine performance (maximum engine torque curve) and the electrical generator operating curve for the Generation Control example of expression Generation Control section 19.In the mapping of internal combustion engine performance, draw according to engine speed and combustion engine and produce the equivalent delivery curve that moment of torsion determines, and connect the operating curve that curve that the point of efficiency of internal combustion engine the best on described equivalent delivery curve forms is confirmed as electrical generator 4.Electrical generator operating point on this operating curve (engine speed, combustion engine produce moment of torsion) is determined by unique with respect to above-mentioned generating request, and can find in advance the combustion engine of combustion motor 3 this moment to control value request (for example, throttle opening) from this internal combustion engine performance.Generation Control for particular point of operation, combustion engine produces moment of torsion and power generation torque need to equate, thereby for example in Fig. 6, in the situation that the generating request is 10kW, can determine that power generation torque order=combustion engine produces moment of torsion=35Nm, and throttle opening (combustion engine control command)=40%.
Describing the output of combustion engine 3 controls.Power generation control 2 calculating " driver asks electric energy generated " of the output of controlling combustion engine 3, " the SOC(charge condition) " and " the request electric power of target SOC ".Calculate " driver asks electric energy generated " by the accelerator operation as driver's artificial manipulation.Can and calculate " driving torque " of driving motor as the accelerator operation of driver's artificial manipulation by the speed of a motor vehicle.
Setting value a is set as the lower limit of the scope of allowing as the usual range that drives battery 5, that is, and the tolerable lower limit of SOC.Be this setting value a when above at the SOC of current time (computing time), this SOC is judged as with respect to this tolerable lower limit has surplus.Because the usual range that drives battery 5 is set to than the narrow scope of usable range that drives battery 5, so compare with the lower limit of the usable range that drives battery 5, this tolerable lower limit is the large value with margin widths.
If the SOC of current time is less than setting value a, this SOC can not reduce again, and is judged as and need to returns to form.Then, with a(" driver asks electric energy generated "+" the request electric power of target SOC ") as " the target output of combustion engine " and improve this SOC, keep simultaneously the driver output based on artificial manipulation.The operation of combustion engine 3 (burning) is in concentrated zone (enrich region).
In the operation (burning) of combustion engine 3, set and export corresponding threshold value b corresponding to the driving engine on border between stoichiometric(al) zone (stoichiometric region) and concentrated zone.Be setting value a when above at the SOC of current time, will compare with threshold value b for generation of the output of the combustion engine 3 of (" driver asks electric energy generated "+" for the request electric power of target SOC ").
When the combustion engine 3 for generation of (" driver asks electric energy generated "+" for the request electric power of target SOC ") is output as threshold value b when following, " the target output of combustion engine " is set as (" driver asks electric energy generated "+" for the request electric power of target SOC ").Thus, improve SOC, keep simultaneously the driver output based on artificial manipulation.The operation of combustion engine 3 (burning) is in the stoichiometric(al) zone.
When the output for generation of the combustion engine 3 of (" driver asks electric energy generated "+" for the request electric power of target SOC ") surpasses threshold value b, " the target output of combustion engine " is set as the value that equates with threshold value b.Thus, preferentially guarantee as far as possible the driver output based on artificial manipulation, if surplus is arranged improve SOC simultaneously.At this moment, the generating corresponding with the SOC deviation do not charged by former state, but suppressed.When the output that only produces " driver asks electric energy generated " required combustion engine 3 surpasses threshold value b, the driving torque of restriction elec. vehicle 1, thus do not carry out improving (to driving the charging of battery 5) of SOC.This moment, the operation (burning) of combustion engine 3 also was in the stoichiometric(al) zone.
As mentioned above, power generation control 2 is controlled the power generation torque of electrical generator 4, with corresponding to the output of asking electric energy generated (driving request output) and generating correction (battery request amount) sum as the driver, wherein, it is to be independent of the driving torque of driving motor 6 and to calculate based on artificial manipulation that the driver asks electric energy generated (driving request output), and generating correction (battery request amount) is to calculate according to the SOC that drives battery 5.
Thus, the power generation control 2 of elec. vehicle 1 can be guaranteed propulsive effort and the rideability in accordance with the driving motor 6 of driver's intention.In addition, power generation control 2 can be guaranteed the electric energy generated for the electrical generator 4 that will drive battery 5 chargings.In addition, power generation control 2 can remain on driving battery 5 state near preferred SOC.
In addition, power generation control 2 presets the SOC expected value as the convergence target of the SOC that drives battery 5, and calculates generating correction (battery request output) according to the SOC that drives battery 5 and the deviation between the SOC expected value.
Thus, the electric energy generated of the power generation control 2 increase and decrease electrical generators 4 of elec. vehicle 1, converge to the SOC expected value of expectation so that drive the SOC of battery 5, thereby follow the charge/discharge of this convergence, make thus the actual SOC that drives battery 5 converge to the SOC expected value of expectation.In other words, power generation control 2 can carry out controlled reset about the charge/discharge that drives battery 5.
In addition, the driving torque that is provided to driving motor 6 by power generation control 2 asks electric energy generated (driving request output) corresponding with the driver based on artificial manipulation, and does not exist with ... roughly the power generation torque of electrical generator 4 simultaneously.
Thus, the power generation control 2 of elec. vehicle 1 can be guaranteed enough propulsive efforts and the high rideability in accordance with driver's intention.
In addition, power generation control 2 is according to accelerator opening and the speed of a motor vehicle and use the first mapping (Fig. 3) to set the driving torque of driving motor 6, in this first mapping, driving torque increases and increases along with accelerator opening, and in high-speed side, driving torque increases and reduces gradually along with the speed of a motor vehicle.In addition, power generation control 2 is only asked electric energy generated (driving request output) according to accelerator opening and the driver that uses the second mapping (Fig. 4) to set based on artificial manipulation, in this second mapping, the driver asks electric energy generated (driving request output) to increase and increase along with accelerator opening, and the driver asks the increment rate of electric energy generated (driving request output) to increase and reduce along with accelerator opening.In addition, power generation control 2 is according to the SOC that drives battery and the SOC deviation between the SOC expected value and use the 3rd mapping (Fig. 5) to set generating correction (battery request output), in the 3rd mapping,, and increase and reduce gradually along with the SOC deviation as the increment rate of the absolute value of the battery request output of generating correction along with the SOC deviation increases and increases as the absolute value of the battery request output of generating correction.
Thus, the power generation control 2 of elec. vehicle 1 can generate electricity fully, guarantees simultaneously the rideability in accordance with driver's intention, and can not bring the difference sense.In addition, the power generation control 2 of elec. vehicle 1 can make the actual SOC that drives battery 5 converge to the value of the SOC expected value that approaches expectation, and keeps this SOC, guarantees simultaneously rideability.
Industrial utilizability
Be not only applicable to the serial mixed power elec. vehicle according to the power generation control of elec. vehicle of the present invention, but also be applicable to series-parallel hybrid electric vehicle.
Claims (4)
1. the power generation control of an elec. vehicle comprises: electrical generator, and it is by internal combustion engine drive; Drive battery, it can be stored the electric power that is produced by described electrical generator and survey SOC as charge condition; And driving motor, it can use the electric power that is produced by described electrical generator or be stored in electric propulsion vehicle in described driving battery,
Wherein, described power generation control is controlled the power generation torque of described electrical generator, with corresponding to the output of exporting sum as driving request output and battery request, wherein, driving request output is to be independent of the driving torque of described driving motor and to calculate based on artificial manipulation, and battery request output calculates according to described SOC.
2. the power generation control of elec. vehicle according to claim 1,
Wherein, described power generation control presets the SOC expected value as the convergence target of the described SOC of described driving battery, and calculates described battery request output according to described SOC and the deviation between described SOC expected value of described driving battery.
3. the power generation control of elec. vehicle according to claim 1,
Wherein, described power generation control provides with the described driving request based on artificial manipulation to described driving motor and exports corresponding driving torque, does not exist with ... the roughly power generation torque of the described electrical generator of while.
4. the power generation control of elec. vehicle according to claim 1,
Wherein, described power generation control is according to accelerator opening and the speed of a motor vehicle and set the described driving torque of described driving motor with the first mapping, in described the first mapping, described driving torque increases and increases along with described accelerator opening, and the high-speed side in the described speed of a motor vehicle, described driving torque is along with described speed of a motor vehicle increase reduces gradually
Only set based on the described driving request of artificial manipulation according to described accelerator opening and with the second mapping and export, in described the second mapping, described driving request output increases and increases along with described accelerator opening, and the increment rate of described driving request output increases and reduces along with described accelerator opening, and
According to the described SOC of described driving battery and the deviation between the SOC expected value and set battery request output with the 3rd mapping, in described the 3rd mapping,, and increase and reduce gradually along with described deviation as the increment rate of the described absolute value of the described battery request output of described generating correction along with described deviation increases and increases as the absolute value of the described battery request output of generating correction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010210969A JP2012066624A (en) | 2010-09-21 | 2010-09-21 | Power generation control device for electric vehicle |
| JP2010-210969 | 2010-09-21 | ||
| PCT/JP2011/063612 WO2012039167A1 (en) | 2010-09-21 | 2011-06-14 | Power generation control device for electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103097219A true CN103097219A (en) | 2013-05-08 |
| CN103097219B CN103097219B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180043955.XA Expired - Fee Related CN103097219B (en) | 2010-09-21 | 2011-06-14 | The power generation control of elec. vehicle |
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| Country | Link |
|---|---|
| US (1) | US8852053B2 (en) |
| JP (1) | JP2012066624A (en) |
| CN (1) | CN103097219B (en) |
| DE (1) | DE112011103151T5 (en) |
| WO (1) | WO2012039167A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103097219B (en) | 2015-09-23 |
| US8852053B2 (en) | 2014-10-07 |
| WO2012039167A1 (en) | 2012-03-29 |
| US20130190132A1 (en) | 2013-07-25 |
| DE112011103151T5 (en) | 2013-07-25 |
| JP2012066624A (en) | 2012-04-05 |
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